Derrick.



.am 0 9 l 4, 2 R. A M D E T N E T A P U. A, E N S R A D... E.. 4.. 00 4, O0 2 7 nw N DERRICK.

APPLIOATION FILED, MAR. 7, 1902.

N0 MODEL.

UNITED STATES PATENT EEICE.

v EDl/VARD P. ARSNEAU, OF DULUTH, MINNESOTA.

DERRICK.

SPECIFICATION forming part of Letters IatentNo. 723,434, dated March 24, 1903.

Application led March 7. 1902. Serial No. 97,158. (No model.)

I citizen of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Derricks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use' the same.

My invention relates to improvements in derricks, and particularly to portable derricks which are adapted for use in lumber-l ing regions and which can be constructed in an inexpensive and simple manner and made vcomparatively light for moving easily from place to place, and yet when anchored in position are amply strong for the ordinary work required in lumber-camps and the like.

It consists in 'certain novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 represents a perspective viewof myimproved derrick. Fig. 2 is a detail sectional view from the upper end of the derrick, showing the means for securing the timbers or logs composing the same together at their upper ends. Fig. 3 is a detail sectional view of the adjustable pole or rod employed in holding the derrick at the proper angle with respect to the base.

My improved derrick is made up of a base 1, a derrick-frame proper, 2, a hoisting-tackle 3, and an anchoring guy-rope 4.

The base 1 and the derrick-frame 2 are formed, preferably, of rough logs stoutly put together, forming an inexpensive structure, and yet one suitable for the desired purpose. The base 1 is composed of main side timbers 5, which are connected at their ends and at intermediate points with cross-timbers 6 and 7. The end timbers 6 support the derrickframe 2 and an adjustable pole or timber 8, which is employed to regulate the angle of the derrick. The ends of the cross-timbers 6 and 7 are preferably cut with flat faces and may be fitted into mortises formed in the upper surface of the said beams or timbers 5. These said beams or timbers 5 are rounded at their ends on their under surface, so that the said side timbers act as runners for supporting the derrick and frame and permit of its being drawn over the ground from place to place, the curved ends of the said timbers facilitating such movement. The frame 1 is also strongly braced by brace-rods 9, extending diagonally between the corners of the frame. The base frame or drag 1 is provided with hauling means to which a team may be hitched for pulling the said derrick or drag in either direction. AA simple contrivance for this purpose is illustrated in Fig. 1 and consists of a rope 10, secured at its ends to eyes fastened in the cross-timbers 6, one of these ropes being applied at each end of the derrick. Each of the cross-timbers 7 carries an automatically operating anchoring means, consisting of one or more pivoted dogs or spuds, as 11, which are pivotally secured by clips or brackets 12 to the said cross-timbers 7 at their ends, the opposite ends of said dogs or spuds being permitted to rest upon the ground and being pointed or sharpened, so that the drag 1 will be held against move,- ment in one direction or the other, according to the position of the said dogs or spuds. When the drag is being moved in one direction, the spuds which oppose movement in that direction are merely swung backwardly on their pivotal points on top of the beam 7, so as to be out of engagement with the ground for the time being. When the drag is putin proper position, these spuds are thrown into contact with the ground again and thoroughly anchor the base or drag 1 in position.

The derrick-frame 2 consists of a pair of poles or timbers 13, which are formed With tenons at their lower ends adapted to rest in elongated mortises 14, formed in the upper surface of one of the cross-timbers 6. These tenons have considerable playin the mortises, so as to accommodate a considerable extent of movement in the derrick-frame 2. These tenons are held against accidental displacement from the said mortises by means of slack chains 15. The upper ends of the poles 13 are brought together and have a cap or ring 16 fitted over and inclosing them, and a bolt 17 is passed through the said cap or collar and through the upper ends of said poles for securely holding all the parts together. A clevis 18 is pivoted upon the outer ends of ICO the said bolt 17 and is connected with eyes 19 in the opposite corners of the drag 1 by means of guy-ropes 20, which extend from said clevis to said eyes. The guy-ropes are preferably connected with the said clevis by means of links or rings 21 or other suitable securing means. The guy-rope 4 is also secured by means of a link or ring 22 to the said clevis 18 at one end, While its other end is carried to a tree, stu mp, or other substantial anchoring means and fastened thereto for bracing the upper end of the drag. A second clevis 23 is also pivoied upon the ends of bolt 17 and serves as a means for supporting a portion of the tackle 3 upon the derrickframe- One of the blocks 24 is suspended from the said clevis, as illustrated in Fig. 1. It will of course be apparent that the clevises 18 and 23 may be secured tol the upper end of the derrick by separate and independent bolts without departing in the least from the spirit ofthe invention. I, however, prefer to use one bolt for this purpose, since itfully accomplishes the desired purpose and cheapens and simplifies the structure of the apparatus.

The rod 8 for adjusting the angle of the derrick-frame 2 is preferably pivoted at its lower end to one of the cross-timbers 6, being connected therewith by means of any suitable clip or bracket,as 25. The upper-end of rod or pole 8 is provided withaseriesof apertures 26, through which a pin 27 may be inserted, the pin 27 also engaging an aperture 28,formed in the cross pole or brace 29, Which connects the poles 13 of the derrick-frame 2. By inserting the pin 27 through different apertures 26 in the pole 8 the angle or position of the derrick-frame 2 with respect to the base-frame or drag 1 may be altered at anytime. After the derrick-frame has been thus altered the guy-ropes 20 are adj usted to correspond. The guy-ropes 2O and the rod or pole 8 hold the derrick-frame in position with respect to the base at all times, so that when the guy-rope 4 is loosened from its anchorage the derrickframe will simply beproperlysupported upon the base 1, and the Whole structure can be easily drawn from one'place toanother. r A hoisting cable or rope 30 passes over the block 24, suspended from the clevis 23, thence through the block 31, its free end being carried backwardly tothe top of the derrickframe and running through a link 32, suspended from a hook 33, carried by the cap 16, and thence passing downwardly to any suitable point upon the derrick-frame 2, to which it is securely fastened. This means of attaching the ixed end of the hauling rope permits of the said end being released and rearranged at different points on the derrickframe and makes it possible to lengthen the hauling rope at the drag end thereof at any time for facilitating skidding or other operations. Suspended from the block 3l is a suitable logengaging mechanism, preferably consisting of a rope or cable 34, passed through a link or ring secured to said block and provided at each end with log-engaging hooks 35. Each of the hooks 35 is provided with a hauling and guiding rope 36,'so that after the said hooks have been fastened to the end of a log attendants may, by grasping the ropes 36, direct the log as it is being moved from one place to another. The hoisting cable or rope 30 passes downwardly from the block 24 around a block 37, which is held in position upon the derrick-frame and the cross-timbers 6, the said hauling-rope passing from said block over the frame or drag 1 to a hauling means. The block 37 carries a hook 42, which engages an eye 43 on the cross-timber G. The block` 37 is also held in'position by a cable or connecting link 44, which extends from the said block to the cross-brace 28 of the derrickframe, to which it is secured. The block 37 is thus suspended in the derrick-frame, so as to accommodate the hauling-rope 30 and so as not to get out of place. In an ordinary logging-camp the hauling means generally consists of a team, and it is usually best to pass the end of thehauling-rope 30 around a block 38, which is anchored to a tree, post, or other suitable object, as illustrated in Fig. 1. The team may be secured to the hauling-rope by bitching it to the trace-ring 39 in the end of the cable. I also provide the cable 30 at one or more points with auxiliary short cables, as 40, which may be provided with tracerings, as 41, for bitching the teams thereto. It is an admirable plan to have at least one of such auxiliary cables 40, so that the team may be hitched alternately to one ring, as 39, and then the other ring 41,to obviate the necessity of moving the team back to its original position every time without being worked. Thus the team may be hitched to the ring 39 and the rope or cable 30 be operated upon, the team traveling backwardly toward the derrick and, of course, toward the auxiliary cable 40. The tackle is then pulled back again to its original position, usually by hand, and another log secured to the lifting mechanism, when the team will be found to be just about in proper position for hitching it to the ring 41. The team then travels outwardly from the dei-rick, pulling the cable by means of the said ring 41 until. the team approaches the block 38 again. After this operation the hauling-rope is again .operated back to lift another' log, and the team will be in position for bitching to the ring 39 again. Thus much time is saved in moving the team from one place to another, and the objects for which the derrick is designed are fully accomplished.

The mechanism above described is admirably adapted for use in logging localities, and especially as there isneed of great economy in such mechanisms and it is desirable to avoid the expense of transporting shop-made bases and derricks, particularly to isolated places, every item of economy, simplicity, durability, convenience, safety,and efficiency counting in the woods.

TOO

IIO

Havingr thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A portable derrick comprising a base formed of a rectangular frame, provided with transverse parallel bars, a derrick-frame mounted thereon, means for holding the same adjustably in position, and dogs or spuds carried by the transverse bars of said base for preventing the movement of the frame after it has been placed in proper position, substantially as set forth.

2. A derrick, comprising a portable frame or drag having runners at the sides formed with curved end portions, dogs or spuds pivoted to the cross-beams of said frame and adapted to be dropped into engagement with the ground at their free ends for anchoring the said derrick in its adjusted position, and a derrick mechanism carried by the said drag or frame, substantially as described.

3. A derrick, comprising a portable frame or drag, a derrick-frame mounted thereon, comprising 'poles secured to the frame at their lower ends, a cap, a ring secured near the apex of the structure by a bolt passing through the cap and the said poles for holding the upperends of said poles together, and means for securing the poles together and the cap in position thereon, and a hoisting-tackle supported by the said derrick-frame, substantially as described.

4. A derrick, comprising a drag, an adjustable derrick-frame loosely mounted thereon, comprising poles spread apart at their lower ends and attached to the said drag, said poles being secured together at their upper ends, a cap for inclosing said upper ends, a pin passed through the said cap and the said poles for securing the parts together, clevises pivoted to the said pin, guy-ropes attached to one of said clevises and secured to the derrick at their ends, and a block and tackle suspended from the other clevis, substantially as described.

5. A derrick, comprising a portable drag, a derrick-frame adjustably mounted on said drag, a brace or pole pivoted to the said drag at one end and adj ustably secured to the derrick at the other end, guy-ropes for securing the upper end of the derrick-frame with respect to the drag, an anchoring guy-rope also attached to the upper end of the derrick and adapted to be secured to some stationary object, a hoisting-rope mounted upon the derrick and passing through suitable blocks, logengaging means suspended from one of said blocks so that by hauling upon the said hoisting rope or cable the log or other article may be hoisted and moved from one place to another, substantially as described.

6. A derrick, comprising a portable frame or drag, a derrick-.frame mounted thereon, a hoisting-tackle carried by the said derrickfram e, and a hoisting-rope running from said hoisting mechanism outwardly from the derrick-frame, means for attaching teams or other power means to the said hoisting-rope, auxiliary hoisting-ropes secured to the said main hoisting-rope for permitting of the power means being applied to said hoistingrope, first at one point and then at the other, substantially as described.

In testimony whereof I hereunto attix my signature in presence of two witnesses.

EDWARDA P. ARSNEAU.

Witnesses:

JAMES T. WATSON, PHINEAS AYER. 

